These authors share the name "Quinn," but it's a surname for one and a middle name for the other.
Susan Kaye Quinn has multiple engineering degrees (including a doctorate), has worked for NASA, and has designed aircraft engines. These days, she's a full-time indie author who's written dystopian YA (Mindjack Trilogy), Bollywood-flavored steampunk (Dharian Affairs trilogy), future-noir (Debt Collector), and an Indie Author Survival Guide, among other works. I like her Dharian Affairs trilogy the best so far. Check out her website and find her books on Amazon.
Chelsea Quinn Yarbro has been writing for more than forty years and has written more than eighty books, over seventy shorter works, and over three dozen essays and reviews. Her most famous series is the Count Saint-Germain Cycle. (I've read a couple of books from this cycle, but I don't own any of them.) Among her other awards, she is acclaimed as a Living Legend by the International Horror Guild and earned the World Fantasy Award for Life Achievement last year. Learn more about her on her website and Wikipedia, and find her stories on Amazon.
Do you know of any other Q women SF/Fantasy authors? Please list them below.